IT工程師數位筆記本

 
package org.hjb.test; 

public class TestOnly { 
public static void main(String[] args) { 

System.out.println("sleep .."); 
try { 
Thread.sleep(10000000); 
} catch (InterruptedException e) { 
e.printStackTrace(); 
} 
} 
}

 PID    USER  PR   NI      VIRT         RES       SHR    S    %CPU  %MEM     TIME+  COMMAND 
27182  root   20    0      1182152      40452     13596  S     0.0   1.0     :00.27   java 

 27297 root  20   0     3319832     34876     13668 S    0.0       0.9       0:00.10     java   

 PID    USER   PR    NI     VIRT          RES        SHR     S    %CPU  %MEM      TIME+  COMMAND 
27406   root    20   0      3345308       35000      13716   S    0.0   0.9       0:00.21   java 

package org.hjb.test; 
public class TestOnly { 
public static void main(String[] args) { 

System.out.println("sleep .."); 
try { 
byte[] buf = new byte[1024 * 1024 * 1024];  //1g  增大其內存
Thread.sleep(10000000); 
} catch (InterruptedException e) { 
// TODO Auto-generated catch block 
e.printStackTrace(); 
} 
} 
}

 PID    USER  PR        NI        VIRT          RES          SHR   S    %CPU  %MEM      TIME+        COMMAND 
 27445  root  20         0        3345308      1.034g        13688 S    0.0    26.8     0:00.89      java